Burner



Patented Apr. 10,1923 7 U NETED- TA THOMAS "res PATENT or F. KENT, or new Yoiax, N. Y.

ics.-

BURNER.

Application filed October 4, 1921. .Serial No. 505,308.

To all whomc't may concern: I

Be it known that THOMAS F. KENT, a citizen of the United-States, residing at New York city, in the county of New York and State of New York, has invented certain new anduseful Improvements in Burners,-

of which the following is a specification.

This invention relates to improvements in burners, and more particularly to that type of burners'in which a liquid'or gaseous fuel is mixed with another medium, such as air or steam.

The primary object of. the invention is to so construct the burner that the fuel-duct thereof may be readily cleaned while the burner is in operation.

A further object of the invention is to provide convenient and readlly operable means for controlling the quantity of fuel,

supplied to the nozzle thus giving to the burner the capacity of controlling the flame both-as to quantity and character.

Other objects and advantages of the invention will become apparent from the fol lowing description.

Inthe drawings illustrating the invention Fig. 1' is a central vertical section of the burner.

Fig. 2 is an elevation of the fuel ling head, and

Fig. 3 is a plan view thereof. Fig. 4 is a detail sectional view of the controllower part of the, valve stem showing the tion such as a supply pipe through which.

manner in which the stem may be plugged or closed, which may be desirable under some conditions. I Referring to the drawings, the'numeral 1 designates a hollow casting having a'lateral extension or boss 2, internally threaded as indicated at?) for the reception of a connec the chamber 4: receives the medium that mixes with the fuel in the operation of the burner.

This casting is apertured atone end as indicated at 5, and internally threaded to receive the thread 6 of a plug 7, provided with a flange '8, which forms an annularshoulder resting against said casting.) The plug is further provided with an externally threaded boss 9 received by the internally threaded end of the needle valve 10, which valve is hollow, and is provided with a laterally extension 11 threaded for-the reception of a suitable oil pipe through which'the burner receives this element of the combustible mixture.

'forthe conical head 20, which is tioned passes through into the mixing The numeral 12 designates the valve stem, which is provided with a central bore or airductl3, which extends entirelythrough said stem. There is provided in the bottom of the valve chamber a seat 14 for the stem, and

the plug 7 is provided for its entire length with a corresponding bore or fuel-duct 15,

which registers with the bore in the valve stem, as clearly shown. To the other end'of the casting or member 1 is a nozzle l6,'which is threaded to the member 1 as indicated at 17, the nozzle being provided intermediate of its length with a conical seat 18, and its end is shapedto' form a mixing chamber 19 in which the elements are further mixed at the point ofcombustion.

The conical seat referred to is provided also provlded with a bore or fuel-duct 20', which conical head is threaded upon the end of the plug 7, as indicated at 21. A portion of :this head is grooved circumferentially in somewhat spiral form, the grooves converg ing toward the endof the head, as clearly illustrated in Figures 2 and 3.

In operation the burner receives its fuel through the fuel pipe leading into the chamber of the leader valve, and is, at the end of.

the stem of the valve, mixed with air which is drawn into the bore 13 in said stem, and

nozzle toward and away from the member'l,

which obviously will increase or diminish the quantity of the mediumpassing through the memberl.

From the foregoing it will be seen that shouldany particles of carbon or foreign substances whichmight lodge upon the seat of the needle valve, they can be discharged into the fuel-duct by opening the needle valve, since it will be noted that the ducts or bores in the various parts form a continuous fuel-duct, and a rod pushed through the needle valve stem will force any deposit chamber of the nozzle, all of which can be done without interrupting the operation of the burner.

The fuel supply is regulated by-adjust ment of the valve stem to and from its seat, and this supply of fuel, when'once regulated by the needle valve, cannot be cut ofiby back pressure produced by abnormal pressure of the atomizing agent, for the reason that the atomizing agent is discharged in also in some instances the nozzle 16 may be integral with the member 1 instead of threaded thereon asI-shown.

Claims.

1. In a burner of the character described, in combination, a needle valve whose stem is hollow throughout, said needle valve being provided with a fuel chamber, and means of attachment to a fuel supply, a member secured to the valve and having a fuel-duct 'therethrough, said member carrying at one end a conical head having circumferential grooves thereon, a member surrounding the y the conical head 20 may be integral with the member 7, and

first mentionedmember and forming a charm ber for the reception of a medium to be mixed with the fuel, a nozzle secured to the hollow member and provided with a seat for the conical head, and means for adjusting said nozzle to and from said head for the purpose set forth.

2. In a burner of the character described, in combination, a needle valve whose stem is hollow throughout, said needle valve being provided with a fuel chamber, and means of attachment toa fuel supply," a member secured to the valve and having a fuel-duct therethrough, said member carrying at its ends a conical head having circumferential grooves thereon, a member surrounding the first mentioned member and forming a chamher for the reception of a medium to be mixed with the fuel, a nozzle secured to the hollow member and provided with a seat for the conical head, said nozzle beingshaped to form a. mixing chamber at the point of combustion, and means for adjusting the nozzle to and from the head.

In testimony whereof I afiix my signature in presence of two witnesses.

THOMAS 1i KENT,

W'itnesses:

N. P. LYONS, H. L. KELLY. 

